drm/amdkfd: Avoid flooding dmesg on Raven due to IOMMU issues

On Raven Invalid PPRs (peripheral page requests) can be reported
because multiple PPRs can be still queued when memory is freed.
Apply a rate limit to avoid flooding the log in this case.

Signed-off-by: Yong Zhao <yong.zhao@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_iommu.c b/drivers/gpu/drm/amd/amdkfd/kfd_iommu.c
index c71817963eea6f2921dab7aaab116283624a9eec..7a61f38c09e65bfd9b33d668799efd9d79ab7aab 100644 (file)
--- a/drivers/gpu/drm/amd/amdkfd/kfd_iommu.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_iommu.c
@@ -190,7 +190,7 @@ static int iommu_invalid_ppr_cb(struct pci_dev *pdev, int pasid,
 {
        struct kfd_dev *dev;
 
-       dev_warn(kfd_device,
+       dev_warn_ratelimited(kfd_device,
                        "Invalid PPR device %x:%x.%x pasid %d address 0x%lX flags 0x%X",
                        PCI_BUS_NUM(pdev->devfn),
                        PCI_SLOT(pdev->devfn),